Roof leader connection



B. GOLDMAN. ROOF LEADER CONNECTION.

APPLICATION FILED DEC-31,1919. v

Patented. June 7, 1921].:

Fig. 2

' INVENTOR Fa'rney LZoZd-m an N ATToRNEYs msww . nular flange 10 to form an openin UNITED STATES Bunny GOLDMAN, on NEW YORK, n. Y.

ROOF LEADER- CONNECTION.

Specification of Letters Patent.

Patented une 7, 1921.

Application filed December 31, 1919. Serial No. 848,845.

To all whom it may concern:

Be it known that I, BARNEY GOLDMAN, a citizen of the United States, residing at New York in the county of New York and State of New York, have invented new and useful Improvements in Roof Leader Connections, of which the following is a specification.

This invention relates to a leader connection for conveying the-waste water from the roof of a building and it is designed to include com ensating means for preventing fracture o the main conduit caused by the vibration or settling of-the building.

The fundamental object of the invention is to provide a simple and effective pliable device connectin the main conduit with the roof to absor any shocks sustained by the conduit.

Another object of the invention is to provide an air space in the upper portion of the conduit whereby the warm air flowing upward from the sewer is circulated to eliminate freezing of the pipes.

The invention resides more particularly in the novel combinations hereinafter described and claimed, reference being made to the accompanyin drawing in which:

Figure 1 is a sectlonal side elevation ofa connection embodying this invention.

Fi 2 is a horizontal section taken along the line 2-2 of the same.

In the drawing the numeral 5 designates the roof of a building having an opening 6 and a water proof surface 7 composed of a combination of tar and gravel as is Well known. The surfacing substance is prevented from spreading or washing down the openin by a dam having a slo ing wall 8 to con uct the water toward t e opening. a

On a roof beam above the opening is secured a plate 9 having a downwardly turned an- 11 in the central art of the plate. The ody of the plate "e ectively covers the opening in the roof to obviate leakage. A strainer 12 surmounts the opening in the plate to prevent any sediment from washmg into the opening and clogging thesewer.

On the lower surface of the plate is $8- cured by soldering or otherwise one end of a pliable corrugated short section of a pipe 13, while the other end is fastened to a discharge conduit 14 extending downwardly into the building. The discharge conduit is tapered toward the lower end and a couplmg or extension 15 is soldered to the outer portion of the conduit. The coupling projects below the end of the conduit and a cast irpn main conduit 16 is secured by calking and soldering as shown at 17 to the couphng. The last named conduit extends downward through the building and it is generally connected to a sewer to lead off the wastes, rain or snow water from the roof.

To the annular flange 10 is secured by soldering a duct 18 having a contracted lower end formed by tapering the duct. The lower end of the duct extends below the bottom of the discharge conduit so that the water will be conducted directly into the cast iron pipe. The wall of the duct 18 is spaced from the discharge conduit so as to create an annular .air chamber 19 between the discharge .pipe and the conduit. The upper part of the chamber is closed by the body of the plate, hence when the warm air flows upward from the sewer it circulates in the chamber and is constantly sucked out by the draft created at the mouth of the opening in the plate. 7

When the cold water is flowing into the duct the air in the chamber will keep the discharge pipe sufliciently warm to prevent condensation and freezing of the conduit. An advantage of this construction is that should one of the pipes above the cast iron main conduit get fractured the other will take its place to convey the water without leakage. The duct also serves as a barrier to avoid in'ury to the outer discharge conduit cause by a personpicking ice from the opening and the tool puncturing the plpe.

As shown in the drawing, the liable connection is preferably made of ead and it has convoluted folds to evenly take up any expansion or contraction of the discharge conduit. The discharge conduit being fastened to the floors of the building an excessive or undue jar 'ven to the bui ding and transmitted to t e discharge conduit will be absorbed by the flexibility of the corrugated connection to prevent breakage of the pipes.

I claim:

1. A leader connection comprising a roof having an opening therein, a plate with an o ening arranged on the opening, a disc arge conduit connected to the plate, and

a duct secured to the plate spaced from the discharge conduit to form a chamber closed at the top for circulating air.

2. A leader connection comprising a roof having an opening therein, a plate with a yielding member arranged on the opening, a discharge conduit yieldingly connected to the plate, and a tapered duct secured to the plate spaced from the discharge conduit to form a chamber closed at the top by the body of the plate for circulating air.

3. A leader connection comprising a roof having an opening therein, a plate with a central opening arranged on the opening, a discharge conduit of larger diameter than the opening yieldingly connected to the plate, and a tapered duct secured adjacent to the opening 1n the plate spaced from the discharge conduit to form a compartment closed at the top by the body of the plate for circulating warm air sucked upward through the conduit.

In testimony whereof I have hereunto 'set my hand in the presence of twosubscribing wltnesses.

BARNEY GOLDN. 

